Question

Which equation correctly represents the distance between −15.1 and −3.9 on a number line?

|−15.2+(−3.9)|=19
−15.1−3.9=−19
−3.9−15.1=−11.2
|−3.9−(−15.1)|=11.2 help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee∵∵∵∵

Answer 1

|-3.9-(-15.1)|=11.2

Explanation:

the last one is the answer

Answer 2

Lets check one by one

#1

• |-15.1+(-3.9)|
• |-15.1-3.9|
• |-19|
• 19

Wrong

#2

• -15.1-3.9=-19

Wrong

#3

• -3.9-15.1=-11.2

Still wrong

#4

• |-3.9-(-15.1)|
• |-3.9+15.1|
• |-11.2|
• 11.2

Distance must be positive so it's correct